Re: [PATCH -next] cgroup: Fix AA deadlock caused by cgroup_bpf_release

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To: Chen Ridong <chenridong@xxxxxxxxxx>, bpf@xxxxxxxxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, Andrii Nakryiko <andrii@xxxxxxxxxx>, Alexei Starovoitov <ast@xxxxxxxxxx>, Daniel Borkmann <daniel@xxxxxxxxxxxxx>, Eduard Zingerman <eddyz87@xxxxxxxxx>, Hao Luo <haoluo@xxxxxxxxxx>, Jiri Olsa <jolsa@xxxxxxxxxx>, Johannes Weiner <hannes@xxxxxxxxxxx>, John Fastabend <john.fastabend@xxxxxxxxx>, KP Singh <kpsingh@xxxxxxxxxx>, Martin KaFai Lau <martin.lau@xxxxxxxxx>, Roman Gushchin <roman.gushchin@xxxxxxxxx>, Song Liu <song@xxxxxxxxxx>, Stanislav Fomichev <sdf@xxxxxxxxxx>, Tejun Heo <tj@xxxxxxxxxx>, Yonghong Song <yonghong.song@xxxxxxxxx>, Zefan Li <lizefan.x@xxxxxxxxxxxxx>
Subject: Re: [PATCH -next] cgroup: Fix AA deadlock caused by cgroup_bpf_release
From: Markus Elfring <Markus.Elfring@xxxxxx>
Date: Mon, 10 Jun 2024 14:28:07 +0200
Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <20240607110313.2230669-1-chenridong@huawei.com>
References: <20240607110313.2230669-1-chenridong@huawei.com>
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User-agent: Mozilla Thunderbird

> We found an AA deadlock problem as shown belowed:

                                           below?

* How was an “AA deadlock” problem detected?

* Were any special analysis tools involved?


…
> preblem is solved.

  problem?


Regards,
Markus

Follow-Ups:
- Re: [PATCH -next] cgroup: Fix AA deadlock caused by cgroup_bpf_release
  - From: chenridong

References:
- [PATCH -next] cgroup: Fix AA deadlock caused by cgroup_bpf_release
  - From: Chen Ridong

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